Smart Multi-Functional Food Delivery Robot for Greeting Guiding and Delivery. Dual Navigation System: Combines Visual SLAM and Laser SLAM for precise positioning and obstacle avoidance. Multi-Floor Capability: Automatically calls and takes elevators in multi-floor buildings for seamless delivery. High Load Capacity: Carries 20-29KG with 4-layer trays, each supporting up to 40kg for efficient bulk delivery. Smart Interaction: Features voice interaction, touch operation, and a 21.5-inch advertising screen for engagement. Versatile Application: Designed for hotels, restaurants, hospitals, and offices with indoor/outdoor working capability. Advanced Safety: Equipped with RGBD, Lidar, and ultrasound sensors for 3D obstacle avoidance and anti-collision.